Caption: Reportage on a physiotherapist who practices vestibular rehabilitation on patients who are suffering from vertigo and/or balance disorders, relating to the inner ear. The physiotherapist carries out an assessment using videonystagmoscopic glasses. These glasses are lightproof and an infrared video camera is attached to them. The physiotherapist mobilises the patient and observes their ocular movements, to determine if the vertigo is a problem relating to the inner ear.